TherMerino Jersey

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Soft and luxurious fleece on the inside of the jersey will keep you warm and cozy on cold rides. Its blend of tech materials and Merino will be your key to feeling completely weather ready.

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225,00 USD
Bijou Blue
  • Free standard EU shipping on any order over 150 EUR
  • Express EU delivery 1-2 business days
TherMerino Jersey Bijou Blue
TherMerino Jersey Bijou Blue 225,00 USD

Thick and incredibly versatile cycling jersey for winter riding

5 / 5
54 reviews

Makes me want to get out and ride in cold weather so I can wear it :)

Nathan Thomas, United Kingdom

Product description

Luxuriously soft and warm, with material that is a touch more concentrated than the Long Sleeve Jersey, our TherMerino Long Sleeve Jersey offers comfort, insulation and a fitted, non-flappy cut for cold days in the saddle.

  • Combination of finest Merino wool, Polyester and Elastane
  • Side panels construction for better anatomic fit
  • Silicone tape around the rear hem to keep the jersey in place
  • Designed by Martin Velits using his experience from the pro peloton
  • Made in Slovakia
  • 53 % Polyester
  • 43 % Merino wool
  • 4 % Lycra
  • Additional zipped pocket to keep contents dry and secure
  • Isadore reflective logo on the back pocket
  • Luxurious fleece on the inside
  • Additional eyelets inside the jersey to lead headphone cables comfortably

Size Guide

Dimension table (cm)

A - BACK LENGTH < 64 64 – 67 67 – 70 69 – 72 71 – 74 73 – 76 76 – 79 79+
B - CHEST < 82 82 – 84 84 – 88 88 – 94 94 – 100 100 – 106 106 – 114 114+
C - COLLAR < 33 33 – 35 35 – 37 37 – 39 39 – 41 41 – 43 43 – 46 46+

Dimension table (inch)

A - BACK LENGTH < 25 25 – 26,5 26,5 – 28 27 – 28 28 – 30 29 – 30 30 – 31 31+
B - CHEST < 31,25 31,25 – 33 33 – 34,75 34,75 – 37 37 – 39,5 39,5 – 41,75 41,75 – 45 45+
C - COLLAR < 13 13 – 13,75 13,75 – 14,5 14,5 – 15,5 15,5 – 16,25 16,25 – 17 17 – 18 18+

The cut is slim fit, made out of stretchy materials. The sizes and cuts of our products, however, are designed to fit standard dress size parameters you would usually wear.

Sizing guide

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Use our Size Calculator feature.


5 / 5
54 reviews

  • Perfect for hard winter

    Melih Aslan, United States, 21.11.2021 (TherMerino Jersey Dried Tobacco)

    I recently moved to MI so winter is too harsh here however if it is not a rainy day this is a perfect product to keep you warm. I really liked the fabric.
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  • Good addition to my wardrobe

    Joost Gremmen, Netherlands, 3.3.2021 (TherMerino Jersey Sycamore)

    I bought this long sleeve recently. Too late was my first reaction when I had it in my hands: it's thick and heavy, and winter already left my country. But on a early morning ride (around zero Celsius) I decided to wear it. At first it seemed not warm enough, as it doesn't block the wind, but after a minute of 10 it started to do what you want such a shirt to do: keep you comfortable without making you sweat (and cooling you down again). The remain of the ride it stayed like that and that is, for me, unusual but very positive. This shirt is well made for longer rides in lower temperatures. Perfect for a gravel rider such as myself, who rides all year round.
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  • Another winner

    Kathleen Holoch, United States, 12.12.2020 (Women's TherMerino Jersey Cabernet)

    Wore this today, 49f and rain showers. The jersey isn't super windproof, but that also is why it breathes very well. I was comfortably warm and never felt wet or cold (or overheated). I liked the length of this jersey. It seems a little bit longer than some of my other Isadore jerseys, which is perfect for cold weather. The pockets are generous enough, the zipper is easy to operate, and the sleeves are nice and long. Overall, another great purchase from Isadore. The fabric, fit, and details on their clothing is great. Everything I have from them looks brand new no matter how many times I've worn it. Great quality and worth the investment.
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  • TherMino jersey cabarnet

    Ziva, 11.12.2020 (TherMerino Jersey Cabernet)

    supersoft from inside an super warm in cold condition I wore it in a very stron wind (burja) with sector jacket on top.
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  • Soft and warm.

    Henrik Hansen, Denmark, 29.11.2020 (TherMerino Jersey Evening Blue)

    Super nice and soft jersey. Have driven in it down to 5 degrees with an ovada derp winter baselayer inside and it was warm enough. is 180cm and 75kg an S fits perfectly. Had given it 5 stars if it had been 1 cm shorter on the belly so it had not curled
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